MES2019

Laminar flow and turbulent Flow (Abhishek sir) by MACE,

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✨Environment Engineering

*{IMP. Points}*

✨5 Days BOD is less than 4 days BOD keeping other conditions same.


✨If Biochemical oxygen demand(BOD) of a town is 20,000 kg/day and BOD per capita per day is 0.05 kg, then population equivalent of town is 400,000.


✨The rate of BOD exerted at any time is directly proportional to BOD remaining.

✨The ratio of 5 day BOD to ultimate BOD is about 2/3.

✨The minimum dissolved oxygen which should always be present in water in order to save aquatic life is 4 ppm.

✨The relative stability of a sewage sample, whose dissolved oxygen is same as the total oxygen required to satisfy BOD, is 100.
Dissolved oxygen in stream is maximum at noon.

✨Facultative bacteria are able to work in presence as well as in absence of oxygen.

✨The means of access for inspection and cleaning of sewer line is known as manhole.

✨Sewerage system is designed for maximum and minimum flow.

✨Lamp-Manholes:- Purpose Illuminating a Sewer Line.

✨Flushing Manholes:- Provided on Flat gradient where self cleaning velocity is reduced due to Flat profile.

✨Leaping Weir:-Separation of Storm Sewer & Sanitary Sewage.

✨Gully Trap:-Prov.at Junction of Sullage and Storm Water Basins.

✨Nahani Trap:-At the Head of each house drain.

✨P-Trap:- Water Closets.

✨Intercepting Trap:-Provided at Junction of House drain and Street Sewer

✨Vent Pipe:- Protects Trap Seal from Backflow.

✨Antisiphonage:-Preserves Water Seal in Trap

✨IDLING:-
When Automobiles give maximum unburned hydrocarbons it is called Idling

(...🌟From Vinayak Sir)
💥Maharashtra Academy For Civil Engineers🌟

💥Maharashtra Academy for Civil Engineers...

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👆this is for all students

Notes of Exploration and Cofferdams by Abhishek sir, MACE

specially For the students of ignite Academy Where Abhishek sir Have taught Soil mechanics

Off course other can use too😊

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👆Aerial Photogrammetry Survey Numerical (asked in IES 2019 Exam)

🌟IMP.
Scale of Photogrammetry(S)=
Photo distance (f)÷Ground distance (H-h)

Where,
H= Fyling Height
h= Height of Ground above Datum